Locksmith Test #5

Question 1

What shape does a top pin have?

Accepted Answer

Flat on both ends

Answer

In a standard pin tumbler lock, the top pins (also known as driver pins) are typically cylindrical with flat ends. One flat end faces the spring, while the other flat end meets the bottom pin. This flat design allows for smooth movement within the pin stack and consistent interaction with the spring and bottom pin.

Question 2

A "self-closing door," as defined by NFPA 80, is one that:

Accepted Answer

Is normally open but will close by some activation device in case of fire

Answer

According to NFPA 80, a 'self-closing door' in the context of fire safety refers to a door that is typically held open but is designed to automatically close upon activation of a fire alarm or other detection device. This ensures that fire-rated doors can compartmentalize a building during a fire, preventing the spread of smoke and flames, even if they are usually kept open for convenience.

Question 3

The following factors make it difficult to insert or remove the key blank during impressioning:

Accepted Answer

Improper lubricating the lock

Answer

During impressioning, the key blank is inserted and turned slightly to mark the pins. If the lock is improperly lubricated, the pins may stick or move sluggishly, preventing them from making clear, consistent marks on the key blank. This makes it difficult to accurately identify the high points for filing, hindering the impressioning process.

Question 4

Door handling for the installation of a lockset is mentioned in the:

Accepted Answer

Egress side

Answer

Door handling, which determines whether a door is left-hand or right-hand, is typically referenced from the egress side. The egress side is the side from which you exit a room or building. This standardized perspective ensures consistency when ordering and installing locksets, as the handing affects the orientation of the latch and other lock components.

Question 5

A tailpiece's function is to:

Accepted Answer

Transfer the motion of the plug to the lock

Answer

The tailpiece is a component attached to the back of the cylinder plug. When a key is inserted and turned, rotating the plug, the tailpiece rotates with it. This rotational motion is then transferred to the internal mechanism of the lock body (e.g., the bolt or latch), causing it to retract or extend and thereby locking or unlocking the door.

Locksmith Practice Test

Locksmith Practice Test

Locksmith Test #5